Relay.



G. F. ATWOOD.

RELAY.

APPLICATION FILED JULY 13. 1907.

949,952. Patented Feb.22,191o.

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NEVT YORK, N. Y., ASSIGNOR TO WESTERN ELECTRIC COMPANY,

ILLINOIS.

GEORGE F. ATWOOD, 0F

0F CHICAGO, ILLINOIS, A CORPORATION OF RELAY.

949,952. Specification of Letters Patent. Patented Fel). 22, 1910.

Application filed July 13, 1907. Serial No. 383,548.

mounted upon the angular extension of the To all Iwhom it may concern: l,

pole piece 7.

Be it known that l, GEORGE F. A'rwoon, 1.

citizen of the United States, residing at Upon the Jfront end of the pole piece 5 is N ew York, in the county of New York and clamped a core extension 12, said extension State of New York, have invented a certain l having a trough-like depression in its upper new and usetul Improvement in Relays, of

surface. The armature 3 is pivoted in said depression, with its two edges in juxtaposition to the opposite ends ot the trough. lith this construction the magnetic iiuX is led into both the frontand rear edges of the armature, the resulting tendency being to magnetically float the armature and prevent its sticking to the core extension. The armature S extends upwardly between the oppowhich the following is a full, clear, concise, and exact description.

My invention relates to a 1polarized magnet device such as, 'for example, a relay for controlling contact springs, and its object is to provide a simple and compact structure which is cheap to manufacture.

My invention consists in a novel assem blage and arrangement oi the parts and in site poles of the Ushaped magnet. An en@ structural details, which may be more readtension 11i ot said armature is equipped at ily understood by reference to the accomits upper end with an insulating block 17 ianying drawings, in which'4 adapted to actuate the contact springs on Figure 1 a side elevation ot a polarized either side thereotl according to the direc relay embodying my invention; Fig. 2 is a tion of the current which energizes the coil front end elevation ot the saine; F 3 is a 1. A spring 15 mounted above the armature vsection on the line Bff of Fig. 1', F 4 is carries a roller 16 adapted to engage a a top plan view; Fig. is a section on the groove in the block 17 and normally hold line of Fig. l.; Fig. G is a detail view, said armature in its neutral position between partly in section of the pole extension, showthe pole faces of the permanent ma gn et. ing the method of mounting the armature; Each. pole of the permanent magnet may and Fig. 7 is a section on the line 7 -7 of be provided with a set screw 13 in order that Fig. 6. the distance between said poles and the Like parts are designated by similar iigarmature may be made adjustable, and the ures of reference throughout the. several extent of the lateral movement` ot said armaviews. ture controlled.

The magnet coil 1, the U-shaped perma- Then current is passed through the coil 1, nent magnet 2, and the structure actuated by the core 5 including the armature B mounted the armature 3, which in the device illusthereon is magnetized, the polarity ot the trated is a set of contact springs Ll, aie aimature depending upon the direction in mounted in alinement with one another, and which the current enters the coil. The U preferably in a vertical row, as shown .in the shaped magnet presenting a positive pole on drawings. one side of said armature, and a negative The magnet 1 surrounds a soft-iron core 5, ypole on the other, said armature it given, said core being secured at the rear to a block Jfor example, a positive polarity bythe mag or plate 6, and carrying between said block netizing ot the coil, will be attracted by the and the coil or spool a pole piece 7 which eX- negative pole and i'epelled by the positive. tends upwardly in Contact with the block A reversal ot current in the coil will reverse 6, and at its upper end is bent at right anthe polarity of the armature, which will gles. The two arms of the permanent magthereupon be attracted by the positive pole net 2 are connected by a y0kepiece 8, said and repelled by the negative. lWhen the yoke-piece being held upon the pole piece 7 coil receives no current, the pressure of the by a screw 9. The forward end of the magspring 15 will canse the roller 16 to descend net 2 is mounted upon an insulated standard to the bottom ot the groove 'in the block 17, 10, which extends upward from the magnet 1 thus returning the armature to its neutral position and opening the spring contacts.

It will be apparent that by means of my which is very will operate with the greatest core, and is held thereon by a fastening clip 11.

A set of contact springs et are held in assembled relation in the usual manner and are invention a device is produced compact, and

eeieney, and which is cheap and simple to and a spring' mounted above said armature manufaeture. and provided With a roller arranged to en- "o I claim r` gage the groove in said insulating bloel, and l. In a polarized relay, the combination thereby to normally hold said armature in a with a magnet Coil, of a eore having' an eX- neutral position between the poles of said tension projecting beyond the front end of l iermanent magnet. said coil, an armature mounted upon said l In a polarized relay, the combination 3 extension, an upwardly extending pole piece ,i with a magnet coil, of a eore having an exearried bythe rear end of said core, and a U- ,f tension projecting beyond the end of said t r l shaped permanent magnet mounted on said coil, an armature pivotally mounted upon pole pieee, said permanent magnet having said extension, a pole piece carried by the its poles extending on opposite sides of said opposite end of said core, a U-shaped per- 40 armature, and a set of Contact springs also manent magnet mounted upon said pole mounted on said pole piece, said springs expiece and having' its poles extending on optending on opposite sides of said armature posite sides of said armature, and a set ot' and arranged to be actuated by the move- Contact springs mounted upon said polepieee, ment thereof in either direetion, said eleetrosaid Contact s )rings extending into the path v magnet, permanent magnet, and set or" conof movement ot' said armature and adapted tact springs being mounted in line with one to be controlled thereby, said eleetromagnet,

another. permanent magnet, and set ot Contact springs 2. In a polarized relay, the combination being' mounted 1n line With one another. with an eleetromagnet, ot an armature there- In witness whereof, I hereunto subscribe 5o tor, a U-shaped permanent magnet having' my name this third day of July A.. D., 1907.

A. T. SOUTAR.

its poles extending on opposite sides of said ,1 a ,V 4 A 70 armature, a set ot Contact springs, an exteir GEORGL I *tu "Ul sion of said arniature having a grooved in- I Witnesses: sulating block arranged to aetuate sait XVM. D. FoNDnnLnIcir,

springs in the movement of said armature, 

